Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilhelm Will Kg, Optisches Werk, 6331 NaubornfiledCriticalWilhelm Will Kg, Optisches Werk, 6331 Nauborn
Priority to DE19702009540priorityCriticalpatent/DE2009540B2/de
Publication of DE2009540A1publicationCriticalpatent/DE2009540A1/de
Publication of DE2009540B2publicationCriticalpatent/DE2009540B2/de